我已经更新到最新的flutter更新。当我要启动项目时，它返回一个错误。该项目取决于多个存储库，我不知道这是为什么。我尝试了多种解决方案，但它们不能解决错误。希望可以有人帮帮我。谢谢。
我已将Flutter稳定版更新为最新版本：
Upgrading Flutter from /Users/domingo/flutter...
Updating cf37c2cd0..27321ebba
24 files changed, 651 insertions(+), 218 deletions(-)
Flutter is already up to date on channel stable
Flutter 1.12.13+hotfix.5 • channel stable • https://github.com/flutter/flutter.git
Framework • revision 27321ebbad (2 days ago) • 2019-12-10 18:15:01 -0800
Engine • revision 2994f7e1e6
Tools • Dart 2.7.0
调试终端完成： https://pastebin.com/2PwktnGT
/Users/domingo/StudioProjects/faycancrm/.dart_tool/flutter_build/e61e4110ac7bd4b7b74855b2fc423272/app.di
ll --depfile
/Users/domingo/StudioProjects/faycancrm/.dart_tool/flutter_build/e61e4110ac7bd4b7b74855b2fc423272/kernel
_snapshot.d package:faycancrm/main.dart
[+2401 ms] [+2478 ms]
[ +1 ms] Compiler message:
[ ] [ +3 ms]
../../flutter/.pub-cache/hosted/pub.dartlang.org/zefyr-0.8.0/lib/src/widgets/input.dart:11:7: Error: The
non-abstract class 'InputConnectionController' is missing implementations for these members:
[ ] [ ] - TextInputClient.connectionClosed
[ ] [ ] Try to either
[ ] [ ] - provide an implementation,
[ ] [ ] - inherit an implementation from a superclass or mixin,
[ ] [ ] - mark the class as abstract, or
[ ] [ ] - provide a 'noSuchMethod' implementation.
[ ] [ ] class InputConnectionController implements TextInputClient {
[ ] [ ] ^^^^^^^^^^^^^^^^^^^^^^^^^
[ ] [ ] ../../flutter/packages/flutter/lib/src/services/text_input.dart:661:8: Context:
'TextInputClient.connectionClosed' is defined here.
[ ] [ ] void connectionClosed();
[ ] [ ] ^^^^^^^^^^^^^^^^
[ +391 ms] [ +402 ms]
../../flutter/.pub-cache/hosted/pub.dartlang.org/cached_network_image-1.1.3/lib/src/cached_network_image
_provider.dart:42:24: Error: The method 'CachedNetworkImageProvider.load' has fewer positional arguments
than those of overridden method 'ImageProvider.load'.
[ ] [ ] ImageStreamCompleter load(CachedNetworkImageProvider key) {
[ ] [ ] ^
[ ] [ ] ../../flutter/packages/flutter/lib/src/painting/image_provider.dart:403:24:
Context: This is the overridden method ('load').
[ ] [ ] ImageStreamCompleter load(T key, DecoderCallback decode);
[ ] [ ] ^
[+8796 ms] [+8774 ms] Persisting file store
[ ] [ +19 ms] Done persisting file store
[ ] [ +1 ms] Target kernel_snapshot failed: Exception: Errors during snapshot creation: null
[ +97 ms] [ +11 ms] "flutter assemble" took 13.771ms.
[ ] build failed.
[ ] #0 throwToolExit (package:flutter_tools/src/base/common.dart:28:3)
[ ] #1 AssembleCommand.runCommand (package:flutter_tools/src/commands/assemble.dart:183:7)
[ ] <asynchronous suspension>
[ ] #2 FlutterCommand.verifyThenRunCommand
(package:flutter_tools/src/runner/flutter_command.dart:615:18)
[ ] <asynchronous suspension>
[ ] #3 FlutterCommand.run.<anonymous closure>
(package:flutter_tools/src/runner/flutter_command.dart:515:33)
[ +1 ms] <asynchronous suspension>
[ ] #4 AppContext.run.<anonymous closure>
(package:flutter_tools/src/base/context.dart:146:29)
[ ] #5 _rootRun (dart:async/zone.dart:1126:13)
[ ] #6 _CustomZone.run (dart:async/zone.dart:1023:19)
[ ] #7 _runZoned (dart:async/zone.dart:1518:10)
[ ] #8 runZoned (dart:async/zone.dart:1465:12)
[ ] #9 AppContext.run (package:flutter_tools/src/base/context.dart:145:18)
[ ] #10 FlutterCommand.run (package:flutter_tools/src/runner/flutter_command.dart:505:20)
[ ] #11 CommandRunner.runCommand (package:args/command_runner.dart:197:27)
[ ] #12 FlutterCommandRunner.runCommand.<anonymous closure>
(package:flutter_tools/src/runner/flutter_command_runner.dart:413:21)
[ +16 ms] <asynchronous suspension>
[ ] #13 AppContext.run.<anonymous closure>
(package:flutter_tools/src/base/context.dart:146:29)
[ ] #14 _rootRun (dart:async/zone.dart:1126:13)
[ ] #15 _CustomZone.run (dart:async/zone.dart:1023:19)
[ +1 ms] #16 _runZoned (dart:async/zone.dart:1518:10)
[ ] #17 runZoned (dart:async/zone.dart:1465:12)
[ ] #18 AppContext.run (package:flutter_tools/src/base/context.dart:145:18)
[ ] #19 FlutterCommandRunner.runCommand
(package:flutter_tools/src/runner/flutter_command_runner.dart:364:19)
[ ] #20 CommandRunner.run.<anonymous closure> (package:args/command_runner.dart:112:25)
[ ] #21 new Future.sync (dart:async/future.dart:224:31)
[ ] #22 CommandRunner.run (package:args/command_runner.dart:112:14)
[ ] #23 FlutterCommandRunner.run
(package:flutter_tools/src/runner/flutter_command_runner.dart:250:18)
[ ] #24 run.<anonymous closure>.<anonymous closure> (package:flutter_tools/runner.dart:63:22)
[ ] #25 _rootRun (dart:async/zone.dart:1126:13)
[ ] #26 _CustomZone.run (dart:async/zone.dart:1023:19)
[ ] #27 _runZoned (dart:async/zone.dart:1518:10)
[ ] #28 runZoned (dart:async/zone.dart:1502:12)
[ ] #29 run.<anonymous closure> (package:flutter_tools/runner.dart:61:18)
[ ] <asynchronous suspension>
[ ] #30 AppContext.run.<anonymous closure>
(package:flutter_tools/src/base/context.dart:146:29)
[ ] #31 _rootRun (dart:async/zone.dart:1126:13)
[ ] #32 _CustomZone.run (dart:async/zone.dart:1023:19)
[ ] #33 _runZoned (dart:async/zone.dart:1518:10)
[ ] #34 runZoned (dart:async/zone.dart:1465:12)
[ ] #35 AppContext.run (package:flutter_tools/src/base/context.dart:145:18)
[ ] #36 runInContext (package:flutter_tools/src/context_runner.dart:64:24)
[ ] #37 run (package:flutter_tools/runner.dart:50:10)
[ ] #38 main (package:flutter_tools/executable.dart:65:9)
[ ] #39 main
(file:///Users/domingo/flutter/packages/flutter_tools/bin/flutter_tools.dart:8:3)
[ +3 ms] #40 _startIsolate.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:305:32)
[ ] #41 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:174:12)
[ ] FAILURE: Build failed with an exception.
[ ] * Where:
[ ] Script '/Users/domingo/flutter/packages/flutter_tools/gradle/flutter.gradle' line: 780
[ ] * What went wrong:
[ ] Execution failed for task ':app:compileFlutterBuildDebug'.
[ ] > Process 'command '/Users/domingo/flutter/bin/flutter'' finished with non-zero exit value 1
[ +3 ms] * Try:
[ ] Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get
more log output. Run with --scan to get full insights.
[ +5 ms] * Get more help at https://help.gradle.org
[ ] BUILD FAILED in 17s
[ ] > Task :app:compileFlutterBuildDebug FAILED
[ ] 1 actionable task: 1 executed
[ +471 ms] Running Gradle task 'assembleDebug'... (completed in 19,2s)
[ +3 ms] The built failed likely due to AndroidX incompatibilities in a plugin. The tool is about to
try using
Jetfier to solve the incompatibility.
[ +15 ms] ✏️ Creating `android/settings_aar.gradle`...
[ +4 ms] ✏️ Creating `android/settings_aar.gradle`... (completed in 2ms)
[ ] ✓ `android/settings_aar.gradle` created successfully.
[ +3 ms] Building plugin audioplayers...
[ +9 ms] Running Gradle task 'assembleAarRelease'...
[ +2 ms] set `android.enableR8=true` in gradle.properties
[ +26 ms] Using gradle from
答案 0 :(得分：0)
似乎TextInputClient的界面已更改，Zefyr尚未更新以完全实现新方法（例如，看起来好像缺少了connectionClosed的实现，但the Zefyr source doesn't have an implementation）。
不幸的是，除了：